Description
Voice Module 60 Sec project will playback and record up to 60 seconds of voice message. This circuit is an excellent choice to add voice to your project.
Specifications:
Up to 60 Seconds of nonvolatile voice storage
Up to eight segments record and play option available
Easy and clear, jumper selectable mode option
Preset for adjusting sampling rate
Tactile switches for Record, Play function trigger
Easy jumper selection for selecting recording source
Onboard microphone for recording message directly onto the chip
Audio output available to drive a speaker
Direct speaker connection via berg connector
LED to display Record/Playback of messages
Berg connector for power supply input
Four mounting holes of 3.2 mm each
PCB dimensions 54 mm x 94 mm
This circuit will help you record and play a 60 seconds voice message stored on it. This circuit is based on APR9600 IC from Aplus.
The project provides four different modes of voice message to be recorded and played, viz i) MOD8 : 60 Seconds is equally dived in 8 equal segments, ii) MOD4 : 60 Seconds is equally divided in four equal segments, iii) MOD2 : 60 Seconds is equally divided in two equal segments and iv) Tape Mode : Entire 60 segment is available in a single shot mode. For MODE selection see MODE selection table.
There are two different ways to record a voice message onto the chip viz. i) CN1 connector on PCB for external audio input or ii) Onboard Microphone. Jumper J3 on the PCB to select audio source. J3-Position A would select the external audio input and J3-Position M/P would select onboard microphone. Onboard preset PR1 will adjust the sampling rate of playback and record option for IC. Important thing to remember is that, if you increase the sampling rate, the duration of message will reduce and vice-versa. For details see resistance values & sampling frequencies table.
Recording a Message:
To record a message, please select the right MODE at Jumper J1 and J2. The MODEs are clearly marked on the PCB and jump or no-jump positions are also marked. Also select the source for recording through CN1 Connector. Keep the sampling rate preset PR1 in the middle position to test a sample of the recorded message. Increasing the sampling rate will decrease the total amount of recording time and vice-versa.
For more detail: 60 seconds Voice Record – Playback module
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